Portable cable lock



FIG. 1 is a rear view showing an embodiment of my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof, with the cable shown extended and the broken-line disclosure of a portion of a handle being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a portable cable lock, as shown and described. 